Earnings Per Share (Tables)

9 Months Ended

Oct. 31, 2015

Earnings Per Share [Abstract]

Basic and Diluted Weighted-Average Number of Common Shares Outstanding

The computation of basic and diluted earnings per share is as follows:

	Thirteen weeks ended				Thirty-nine weeks ended
	October 31,		November 1,		October 31,		November 1,
	2015		2014		2015		2014
	($ in millions)
Weighted-average common shares outstanding		139.3		143.6		139.6		144.5
Effect of Dilution:
Stock options and awards		1.6		2.1		1.8		2.1
Weighted-average common shares assuming dilution		140.9		145.7		141.4		146.6